SanCoder-Q

Synology NAS - How to make a program run at startup
The other day I created a little node.js project to keep track of some finances. Synology has a node.js package but that just installs the tools - it has no 'container' or any other support to drop files and have it run automagically. Maybe one day.

In the meantime, you can start your project when you SSH into the NAS. My project has a 'www' script which bootstraps my project, so to start I simply type 'node bin/www' from the project directory. But, it only runs while I'm logged in, and if I log out for any reason, the process dies. That's hardly useful when I'm away from home, or on a different PC. So I decided to have a look at starting my project as a Linux service.

After doing a lot of research into how Synology does services, and a few failed attempts at init scripts, I found that Synology DSM (since version 5 perhaps) bundles Upstart, which is a neat little tool to deal with services on Linux. It's most prevalent on Debian and derivatives (notably Ub

jorgesancha

What follows is a technical test for this job offer at CARTO: https://boards.greenhouse.io/cartodb/jobs/705852#.WSvORxOGPUI

Build the following and make it run as fast as you possibly can using Python 3 (vanilla). The faster it runs, the more you will impress us!

Your code should:

• Download this ~2GB file: https://s3.amazonaws.com/carto-1000x/data/yellow_tripdata_2016-01.csv
• Count the lines in the file
• Calculate the average value of the tip_amount field.

yaud

#!/bin/sh

NODES=`redis-cli -h $1 cluster nodes | cut -f2 -d' '`

IFS="
"

for node in $NODES; do
	echo Flushing node $node...
	redis-cli -h ${node%:*} -p ${node##*:} flushall

fancellu

import java.util

import org.apache.kafka.clients.consumer.KafkaConsumer

import scala.collection.JavaConverters._

object ConsumerExample extends App {

  import java.util.Properties

benburry

from subprocess import Popen, PIPE


def shell_out(command):
  return Popen(command.split(' '), stdout=PIPE,stderr=PIPE).communicate()[0].strip('\n').split('\n')


def main():
  return shell_out('echo one\ntwo\nthree\n')